Diablo Trail Run 2026 — Clayton, CA

Date
September 6, 2026
Location
Clayton, CA
Venue
Diablo State Park (Mitchell Canyon Trailhead)
Start Time
7:50 AM
Entry Fee
$0.00 – $110.00
Events
4 Mi, 10 Mi, Half Marathon, Marathon, 50K, Kid's Run (6yo & younger, 50yd dash) - Free!
Includes
T-Shirt
Register NowRegistration Open
Mount Diablo provides spectacular views of the San Francisco Bay Area and surrounding valleys. The 4 mile course is relatively flat and fast within Mitchell Canyon. The longer events are mountainous and very scenic. (Distances are accurately measured using a Rolatape® surveyor's measuring wheel.)

Hotels Near This Race

Find accommodation close to the start line in Clayton, CA. Sorted by distance from the race venue. Book early — race weekend hotels fill fast.

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Diablo Trail Run 2026 — Clayton, CA

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Race Travel Insurance

Don't forget travel insurance for September 6.

You've trained for months and booked a trip to Clayton, CA. A pre-race injury, a delayed flight, or a family emergency can derail the whole thing. Travel insurance can help cover your race entry fee, hotel, and flights if you can't make it, and may cover medical costs if something goes wrong on the course. Plans typically only run 5-7% of your total trip cost — and running events are covered under standard plans with no additional coverage needed.

  • Trip cancellation up to 100% of prepaid costs
  • Running events covered under standard plans — no add-ons needed
  • Trip interruption up to 150% of non-refundable costs
  • Emergency medical up to $250,000
  • Cancel For Any Reason add-on available
  • 24/7 real-time support

Affiliate links — we may earn a commission at no cost to you. Coverage terms vary by state and plan. Review policy details before purchase.